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mongodb group values by multiple fields
...lly give you the top 2 "books" from the top two "address" entries.
But for my money, stay with the first form and then simply "slice" the elements of the array that are returned to take the first "N" elements.
Demonstration Code
The demonstration code is appropriate for usage with current LTS versi...
How can I view the source code for a function?
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@AriB.Friedman - thanks Ari, this is handy. In my case I still needed the knowledge shown in the answer (scale, which is S3 - I got UseMethod("scale") and then used getAnywhere(scale.default)). But plain functions work just fine.
– Tomasz Gandor
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Why in Java 8 split sometimes removes empty strings at start of result array?
...posted answer few seconds before ZouZou, but unfortunately ZouZou answered my question earlier here. I was wondering if I should asked this question since I already knew an answer but it seemed interesting one and ZouZou deserved some reputation for his earlier comment.
– Pshem...
CMake link to external library
...(${CMAKE_BINARY_DIR}/res)
And then just do
TARGET_LINK_LIBRARIES(GLBall mylib)
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When do I use a dot, arrow, or double colon to refer to members of a class in C++?
...erence is not a pointer, so it can use ., and I will make it more clear in my answer.
– Hu Xixi
Sep 5 '19 at 2:27
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What is the Haskell response to Node.js?
...t is useful right out of the box. And this is the same image that I saw in my CS course; and the best part is that it is not hard in Haskell to achieve similar awesome results in your own programs.
– Robert Massaioli
Oct 3 '10 at 7:57
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What is DOM Event delegation?
...tion:
var newLi = document.createElement('li');
newLi.innerHTML = 'Four';
myUL.appendChild(newLi);
Without using event delegation you would have to "rebind" the "onclick" event handler to the new <li> element, in order for it to act the same way as its siblings. With event delegation you do...
Generating an MD5 checksum of a file
...ncorrupted when it isn't the file you're expecting at all. No, I stand by my scary warnings. I think MD5 should be removed or come with deprecation warnings.
– Omnifarious
Aug 7 '10 at 20:21
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what exactly is device pixel ratio?
...hed if its original width is 300 physical px and now it's 600 physical px? My understanding is its quality is lower because it got physically stretched from 300 to 600px. Can you elaborate on this a bit more, please?
– Peter
Mar 19 '16 at 6:48
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How to use git bisect?
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So i did git bad on my HEAD and git good on the first commit, when the error was not present. So what to do next? when bug is not present git bisect good to move to next commit?
– Gobliins
Feb 20 '18 at 10:...